14+(-4)+(-2)+26+(-3)=?(-83)+26+(-41)+15=?
14+(-4)+(-2)+26+(-3)=?(-83)+26+(-41)+15=?
计算:1、(+14)+(-4)+(-2)+(-26)+(-3) 2、(﹣83)+(+26)+(-41)+(+15)
(+14)+(-4)+(-2)+(+26)+(-3) 用有理数加法德运算律计算
(40)-(+27)+19.24-(-32) -9-(-2)+(-3)-4
- |- 0.25 |+(+4分之3)-(-0.125)+|-0.75|
化简:+(-8)= -[-(-2)]= -[-(+2)]=
1.(-83)+(+26)+(-41)+(+15),2.(+14)+(-4)+(-2)+(+26)+(-3)
[()()+52]÷26-3=0 712-6280÷[4×()()()]=702
10-【-(-4)】+(-3)-5
解方程组:(x-2)(y-1)=(x-2)(y+3)① (x-12)(y-14)=(x+12)(y-2)②
计算:(-6)-(+5)+(-9)+(-4)-(-9)
数学题目: --------—4+(-5)=-12 -15- ----------+(-1)=8 -9--------+